Quote:
Originally Posted by Taylor95
The front ones I can definitely test. I still want to do that. I think coastdown testing would be the best method, but I do have a scangauge I could use too. The rear ones would require removing the tire no matter what... there is probably 1 cm in between the tire and the screws. Not to mention I also would need to remove some body paneling to put them back on.
That is good to know that dome cars come with gurney flaps from the factory. Mine hardly stick out at all so I would think that they are beneficial. It would just be a lot of effort to test...
It is worth mentioning that I did see a slight mpg increase my last fillup, which is the first one with my mods. It has been a lot colder lately, so I think I can attribute some of the difference to my mods. I will definitely get around to testing the front ones though, and postung what I find.
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Gurney flaps are on wings. They're called tyre deflectors (tire deflectors in the US).
I will be very surprised if any on-road testing can repeatedly show the results of such a tiny mod on / off.